Pirn-winding machine



June 10,'1930. Hf scHwE|TER V I PIRN WINDING MACHINE Filed'Oct. 1l, 1928 3 Sheets-Sheet l June l0, 1930. H. scHwErrr-:R

PIRN WINDING MACHINE Filed 0G13. ll, 1928 .3 Sheets-Sheet 2 'June 10, 1930. 'H 'scHwEl-rER v h Y PIRN WINDING MACHINE Filed ont. 11, 192e 3 Sheets-Sheet 5 IIIIIIIIII IL lthat means before 'the'. jeiirnisv Completelyv Y f empty Suche yaln-reseiyeyis tofbelconsidr.- f .10 eiabiy narrowerthanthe mainWinding;`- vBer20 theV saine toland lfroV inotion'asjthe spindle lit-" l self 1 Therefore," as long as ,thek-auxi'hary :1.25 the yarniesenvenis.Woundion a yery'nfaijrow Vportion of the Weitt-pimV andthat 1t 1S neces Patentediiune 10; 1930 j "i fPIRNWINnING MnGI'ANE- K y Application hier; oettb'esin 1928, seri No1.f31"1f,s7e,"and 'in Germaly Januiye," 1928;v

i "My inventonzrelatesfto jpirn Winding@nia-V `shines having an axially to endif() moyings 'Y @Winding spind1e., W/Vith pinnsiin particular those'l intended Y for, YisoV-c'ailledrgautonaticsfQ [hand and ofthe {doint of fe- 5 'usuallya `yarnreserve ,is provided, theobjeet;

of which vist@ 1 effect. a .stoppageQ of the L )ofwer Y sidesthe.stationaryyaifniguide therefore a v which acts 'onlyteinporarily andjis in action at. the beginning-.fof V`the `Winding' ,operation i ntheVV known designs i of; pirn rWinding 'nfla-` -chines V*with to a'ndfrom'oying spindlethe.

auxiliary yarn' guide is coupled-With the driyi ing ygear of the spindle, so that -it executes yarn guide guides the'yain-tojbewoundfup,

fthe latter Wil-1 Valway31111.11,"0X1thesam P13436 fof the pirn tube; This results in gthefact that ciproc'ating spindle on ther vauXil'iaryfv guide Y i l.on the other hand this*afrangeinent*enablestoY s ObmrnfiYiwu@servaWhh,51116,Sharron/ei, l tha'ntheniain Winding,-bi1t-neyerthelesspegan y sessesfra Widthsu'ehfasto Warrai'itasecuree-"V fl' sequent {n orifnal Windingopeiation .isj-eiieeutedjbythemainfyarn guide. 1

f nloiiderrtofpelfmit n 1yinvention to hemoref; Leasiiy..unde1sto0d5ifar preferredelnbodiment of; these-inem lllulstratedibye-Way'.ofezamplwm inthe drawings which aeeouiijany alndfifoni v part o-ths speeiicatiom 'In these difaW-ings'if v Figure lis aflengltudinal '1Vertical-seet-Qnfgf ff 'Y through-theaparts fini;questionA of my, inn.Y y

sary to adjust theffe'eler of the-loom eXtraOr' v viate this drawback that the;giugnoWn'jaii-istnge-k ments suffer f1om, and toso. guide ftheyzirn;

that-thel reserve layersbeceni'e sufficiently Y, Ytoshe .adjusted accurately and notWithstand-r ing acts-inasatisfyngmanner, '1' This ohj'e'etiislprimarilyjohtalnedf aeeord'- i ing'v to inyentionfbfy, the? fact that, the"aux;

"de 'desioned-fsolasfto i0 Y* fff. .40jl wide, so that thegfeeler'of theloom needs not] ne 0 'idei Fla O 'Tessiner lt0 and fio'nio'tioni vented-mythe@ h 1 thaty rthe yarn rieserye'1,is,pretjlueedon[thel botsing' the e zr 11 that carries a shaft 1/1 extending at right angles thereto and havingrnounted on it an auxiliary yarn guide 16 so as toswingand to Vbe axially shifted thei'eon. On this guide 16 there is'provided a lug 17 which in the operative position, Figure Il, projects into the path of a collar 18 provided on the pirn spindle 7;

l Consequently the auxiliary yarn 4guide 16 takes part in the loutward motion of the spindie 7, whilst its inward motion is provoked by means of a spring 19, Figure 2.

Theyarn guide 16 possesses a sleeve-shaped hub 2O on which is fixed a knob 21. In the 1 latter is lodgedA a` spring 22 abutting' on the .headofshaft 111` and tending to hold the yarn guide i 16 I ure 3,

in the inoperative position, Fig- Y The hub 2O hasrotatably'mountedon it a sleeve 23 connected to the knob 21 by a coiled tain-initial tension so,l that it tendsto turn the sleeve 23 on the -hub 20. In the position of rest of the guide 16, Figure 3, this turning thefsleeve 23 that may be rigidly connectedY thereto by a set screw 26. The ring Vhas further an axial lgroove 27 which isengaged i bythe upwardly bent head 28 of a rod129 motion is prevented by a ring 25 arranged` on vmounted on the arm15. A` circumferential slot 30,V Figure 15, provided in the ring 25 enables the` operator to alter the position of `the latter relatively to the sleeve 23.V

L Inthe position of rest the auxiliary yarn guide 16 assumes the position illustrated in Figure 2, in which ai nose 31 provided on it labuts on the rod 29. fIVVhen now the guide 16 should be thrown in, an axial pressure is eX- i' erted by hand upon the knob 21 whereby the guide 16 is shifted from the positionv shown in Figu'rey3,` into that of Figure 4, wherebyl spring 22 is compressed. Inl this vposition the nose 31 arrivescopposite a recess 35 provided in the rod v29, so'that'a'to and fro'irocking ino-` Y tion'of the guide 16V is now possible,1which inotion is provoked-by the actiono'f collar 18 and spring '19, respectively.' In Vthe inward shift of `guide 16 thehead 28 ofthe. rod 29 leaves the groove 27. of ring 25. Thesleeve 23 and the ring 25 connected thereto are thus re- Y leased and execute a'tui-ning inotiondue to the initial'tension of spring 24 until the'screw V26` strikes. the rod 29. The head r28 lof the latter prevents an outward lmotion of the parts byrelaxing of the spring 22, as this head Aj abuts on the outer front facelofring 25 and f "locks it., 'Ihe two front faces of the ring 25 fare providedwith'ratchet teeth 32,133, Vsith Y' theratchet teeth 32 co-operates the head 28 of theme29 and4 withihe ratchet teeth sa av y Y `gspringfpawl k311 mountedontheV guide 16 in A:55.

such a manner that upon the guide 16 swinging in the one direction the sleeve 23 and ring 25 are taken with it, whilst in the swing inotionV of guide 16 in the opposite direction the pawl 311 freely glides over the teeth 33, while ring 25 and sleeeve 23 are held fast by the head 28 of rod 29 engaging the ratchet teeth 32; i

A spring 36 arranged between the sleeve 23 and the auxiliaryyarn guide 16 assists in producing the described step motion. Now, as soon as the sleeve 23 withY the ring 25 has returnedtoinitial position,whereby spring 24 is'tensioned, the groove 27 of ring 25 arrives opposite the head 28 ofi-od 29, sothat now under the action of spring 22 the whole system is shifted .outward toward the right and `again assumesthe inoperative position illusvtrated in Figure 3. Owing to the ring 25'being. abierto be displaced relatively to sleeve 23 by means ofits slot 30, the possibility is given to adjust theV period of time during which the yarn guide 16 is in operative position and operation.

`.As to be seen from Figure 1, the guide 16, when thrown in, catches the yarn that isV guided `by the stationary main guide 13 t0 the pirn tube, so that then this latter guide becomesinoperative and the-yarn is guided byy the' auxiliary guide 16.l New, as the distance of the headofguide 16 from' the collar 18 in theextreine right-hand position of the former is only equal to itl, Figure 1, whilst this distance'in` the extreme left-hand position indicated by dottedlincs, of guide 16, is equal tol h2, the amplitude of the head of guide`=16 relatively to the pirn tube is tube, which-winding in .comparisonwith the herei-nbefore `mentioned reserve windings af# fords the advantage that the individual layers may be wound up `in the normal manner and cannot glide off. The distance i, is wide enough to securea satisfying action of the feeler ofthe loom. v 'Y Then the auxiliary yarn guide 16 thereupon automatically returns to inoperative position, asdescribed above, theffurther winding Voperation `,takes placeV normally, that means with -anainplitude corresponding to the pit-chA H of thegrooved disk 9 until the -pirn is finishedf` w To iinprove the possibility of adjusting the auxiliary yarn guide 16, so that the position it assumes when at rest and that it returns to after'the reserve Ahas been finished can be precisely fixed, I provide the modified forinofthe guider16'illustrated in Figures 6 and 7 In Fig. 7- spring pawl 34' is shown 90O away from the showing-in Figs. 3, Lland 5, in order to show more clearly its relationship tothe infeniber 25. The other partsexactly correspond to those of the first-described arrangejrnent illustrated in Figures-'1 to 5 withthe sole-exception that the'rod 29a is not rigidly-"n l 'mounted on the armlbuthas an extension-f 3'? by means oi Whichitis eccentrically fixed clamping screwf39. Itis this sleeve'38 Whereonfa sleeve 38, The latter is rotatablylodged ingaborefof arm` .15 and canbeliredin-any desired angular4 position 1 by means ofk va in the sli-ait 14 is secured and locked by a nut Y 40. v The auxiliary: yarn guide 16 is here provvided With an adjustableWire-eye 16.. The Afact ythat the "position vof the l rod 29a` can be :varied at willy affords the possibility of xing' the position of the auxiliary yarn guide 16 iny the state of rest according to y'all :requireinents. The `function itselfyr olfV the z auxiliary z.

yarn guide is the same as that of. the keinbodiV nient described with reference,vv to Figures ters Patent, is i 20l yarnthread'and an auriliaryfyarn guide.

i adapted to assnnieanfinoperative andan `opy 25l erative rposition and lto assume' the yguiding control Vof said yarn'fi'njtlie latter-,position, and means for imparting' reciprocating swing niotion from said spindle 'tosaid latter guidey ingniotionon said journalfmeans forv shiftIV- ingfsaid latter guide on said Journalff'intofan .when in operative position.V l l 2. In a pirn'windingfinachinefan"axially reciprocating ypii'n spindle,a stationary main .p

yarn guide noinial1ly{adapted to guide'ayarn thread, a journal lixedon` a stationary-inaf cliine part, an'auXi-liaryyarn 'guide mounted iorreciprocating swing motion and for shift'-V Y inoperative and an operative position', esa-id Y ing` swing motion VVfromsaid spindle to4 said auxiliary' Vguide'being,` y adapted to assume fthe:

sition, and means forsimparting .reciprocatf latter guide When in goperativefposition. 1 3.'In alp'irnfwinding -inachine anlf'axiallyf 'reciprocating pirn spindle, a stationary main.; 'yarn-.guide normally adapted'to guidea yarn-l thread, ari-journal Xedy ori-Va` 'stationaryina- 1chiiie'part, Van auxiliary yarn gui-de'finountedlvs relaxing .said auxiliary'guide' beingadapted )to assume .the guiding-control vof saidy yarn in theoperatilve position, a proj ectionon said spindle, alugon `said latter'-Aguide-fadapted to f for reciprocating swingmotion and forshi-rrt!l inginot-ion on said journal, means-'orfsliift-A ing said 'latter 'guide on' said ournalf-into anY inoperative and Ian:A operative position, "sa-id'v auiiiliaiy guideibeing adapted to assume' the guiding control'oisaidyarn Yin the: latter poone direction andsaidlatter ,guide bein'gfin 'operativel position,"aiidjafpower accumusition, a project-ionen said spindle, ajlug on? said latter guide adapted tobe 'f'angag'ed'by"' spindle moving in theeiigaging' direction-and to' swing" Vsaid- 'latter ,guided 'back rWhilel `saidV spindle moves opposite' directionV and' for Aautomatically'vcausingsaidV spri g shirt lsaid latterguide' intoilioperativeipo l saidproj ection' upon` said spindle movingV 1n" at'or attached to said latter vguide and iadapt 'ed tobe loaded? by i saidspindle'.-moving-it n f Vth'e'engaging direction andto-'svvinglsaid at opposite direction' guiding control ofsaidY yarn in the latter po--x` cliineupart, ian auxiliaryyarn vguidejmoi'intedjxgior :reciprocating .swingimotion and.. for .5 shifting motion on-sa'id journal, a'liub on said 5 latterguide: freely rotatable and shiftableon' `cip'rocatingfpirn spindle, a stationary Vina-in f yarnguidenormally*adapted to guide a yarn threacha journal fixed ,on avvstationary ma* #"chinepart, an auxiliary yarn'guidemounted A 'for r'eciprocatingv swinginotion and for shift'` Y fing motion on said journal{nieans forfshift *ing saidlatter guide vonsaid journal into an inoperative yand an; operative position, said 'I sition, means-rior imparting` Vr'eciprocating i l swinga motion-'from said spindle to said latter Y guide when inoperative position, andpineans for auton'iatically shifting it into inoperative 5. AIna pirn Winding machine anaXially auxiliary guide being'adapted to assume the guiding control of said yarn in tliela'tterA poi reciprocating pirn" spindle, 'a stationary; f main yarn guide normally adaptedto .guide l Va yarn thread, agournalixed on a stationary` 851' niaciiinepart, an auxiliary yarn guideinountedffor vreciprocating swing motion and 'forzshitting` inotionon'said Journal, ahub onsaid vlattergguide i'reeilygrotatableand shiftable on said journal, a spring adaptedA to beconiz- Dressed .b said hub uconfsaidlatter 'Guide beinashii'ted into operative position and Vto shiftthe latter into inoperative `position when position, and meansffor automatically shifttain nuniberfof swing -niotionsV relaxingsaid auxiliary guide Vbeingv adapted '-ftfo Aassume the guiding' controler-said yarn; in the :operative position, ,means Y for impart-I ving' reciprocating `swing vmotion from said spindle to said v'latter guide when in operative 6. in a.pim'Windingimaehineffaa axially;

reciprocating pirnspindle, a stationary .main

.yarn guide normally adapted to guide a yarn',

thread, ai journal vliiredfon la stationaryinafsl"05 said journal', a spring adapted tobe coin-V fpressedby. liubupong"saidvijlatter yguide being'f shifted into.VY operative Ypositionand, to

shift the latter into inoperativeposition ywhen sitio af-ter a'gcerta'inv n' 'iniber' fof" svv n'g "niol g pirn's'p'indle", yafstation-'aryfina'iny die -nioving inonefdirection andv said llatter guide being' in yope'rative' ,sitioin` a .power4i 'e0' wpawlwand ratchet gear arranged between said yarn guide normally. adapted to guide a yarn thread, a journal fixed on a stationary niapressed by said liub upon said latter guide being shifted into operative position and to shift the latter into inoperative position when relaxing said auxiliary guide being -V Vso adapted to assume the guiding control of said yarn in the operative position, means for imparting reciprocating swing 9motion from said spindle to said latter guide when in op-` erative position, a sleeve fixed on said hub, an initially tensioned coiled spring adapted to ,rotate said sleeve relatively to said hub, means for preventing thisrotation of said sleeve Vin the inoperative position of said latter guide, for releasing it in the operative position of the latter, and for limiting this latter rotation, a pawl and ratchet gear arranged between said latter guide and said sleeve and adapted to cause the latter to stepwise retension said coiled spring during the swing motions of said latter guide, and a check .pawl and ratchet gear arranged between said sleeve and a fixed part Vof the machine.

8. In a pirn winding machine an axially j reciprocating pirn spindle, a stationary main yarn guide normally adapted to guide a yarn thread, a `journal fixed on a stationary machine part, an auxiliary yarn guide mounted for reciprocating swing motion and for shifting motion on said journal, a hub on said latter guide freely rotatable and shiftable on said journal, a spring adapted to be coni- `pressed by said hub upon said latter guide being shifted into operative position and to shift the latter into inoperative position when relaxing said auxiliary `guide being adapted Vto assume the guiding control of said yarn `in theoperative position, means for imparting reciprocating swing motion from said spindle to said latter guide when in operative positioma sleeve fixed on said hub, 'an initial-` ly tensioned coiled springadapted to rotate v said sleeve relatively to said hub, a longitudinal groove in said sleeve, a fixed bolt engaging said groove when saidY latter guide is in 'inoperative position andto release it upon said latter guide being shifted into operative position, means for limiting the rotation of said sleeve upon said 'lat-ter guide being in operative position, a pawl and ratchet gear arranged between said latter guide and said Vsleeve and adapted to cause the latter to step-A wise re-tension said coiled spring during the swing motion of said `latter guide, a check sleeve and a fixed part of the machine, a nose on said latter guide adapted to abut onsaid vbolt upon the former being in inoperative porsition, and a recess in said bolt` adapted to re- "lease said nose when said latter guide is shifted into operative position.

9. In a pirn winding machine an axially reciprocating pirn spindle, a stationary main yarn guide normally adapted to guide a yarn thread, a journal fixed on a stationary inachine part, an auxiliary yarn guide mounted for reciprocating swing motion and for shifting motion on said journal, a hub on said latter guide freely rotatable and shiftable on said journal, a spring adapted to be coinpressed by said hub upon said latter guide being shifted into operative position and to shift the latter into inoperative position when relaxing said auxiliary guide being adapted to assume the guiding control of said yarn in the operative position, means for imparting reciprocating swing motion from said spindle to said latter guide when in operative position, a sleevefixed onsaid hub, an initially tensioned coiled spring adapted to rotate said sleeve relatively to said hub, a longitudinal groove in said sleeve, a fixed bolt engaging said groove when said latter guide is in inoperativeiposition and to release it upon said latter guide being shifted into operative position,a lug on said sleeve, a projection on a fixed machine part adaptedto stop said lug after a certain rotation of said sleeve, a pawl and ratchet gear arranged between said latter guide and said sleeve and adapted to cause the latter to stepwise re-tension said coiled spring Aduring the swing motion ofsaid latter guide, a check pawl and ratchet gear arranged between said sleeve and a fixed part of the machine, said latter pawl being formed by said bolt, a nose on said-latter guide adapted to abut on said bolt'upon the former being in inoperative position, and a recess in said bolt adapted to release said nosewhen said latter guide4 is shifted into operative position.

` 10. In a pirn winding machine an axially reciprocating pirn spindle, a stationary main yarn guide normally adapted to guide a yarn thread, a journal fixed on a stationary machine part, anauxiliary yarn guide mounted for reciprocating swing motion and for shifting motionon said journal, a hub on said latter guide freely rotatable and shiftable on said journal, a spring, adapted to be compressed by said hub upon said latter,V guide being-shifted into operative position and to shift the latter into inoperative position when relaxing said auxiliary guidevbeing adapted to assumerthe guiding control of said yarii in the operative position, means for imparting reciprocating swing motion from" said spindle to said latter guide when inoperative position, asleeve fixed on said hub, an initially tensioned, coiled spring adaptedto rotate saidsleeve relatively to said hub, a longitudinal groove in said'sleeve, a fixedjbolt engaging said groove when said latter guilde is in inoperative position and to release it upon said latter guidezbeing shifted into op-` erative position, circumferential""angular yarn guide, normally adapted to guidea yarn Y thread, a .journal fixed on astaticnary inaj chine part, an auxiliary yarnguide mounted slot in said sleeve, aheaded'claiiiping screvv fired-in said hub and Vextending through said slot, a 'projection "on a fixed machine part adapted to stop the head of said screw, after a certain rotation ofsai'd sleeve, a paWl andi" ratchet gear arranged ybetween said latter guide and said sleeve and adapted to cause" the latter to stepwise re-tension said'coiled o :spring during the swing motion of said 'latter guide, a check pavvl and ratchet geararranged between said sleeve and a flXed part'ofthe machine, saidl latter pavvlobeing formed 'by Vsaid bolt, a nose on saidl'atter 4guide, adapted Lto abut ori-said bolt upon the-former being in inoperative position, and a recess'in said bolt 'adapted to releasek said nose when `said latter guide is shifted into operative position. l o

1l. In a pirn Winding machinean axially reciprocating pirn spindle, astationary main yarn Ouide normallyY adapted toguide a yarn thread, a journal fixed on a stationary machine part, an auxiliary yarn guide mounted j for reciprocating swing motionk and for shifting motion on said journal, a hubon said latterguide freely rotatable andsliiftable on said journal, va spring adapted to be compressed rby said hub upon said latteiyguidel being shifted into operative position and to shift the latter into inoperative position,when. relaXing, said auxiliary guide being adapted to assume the guiding control ofr` said yarn in the operative position, a projection on said spindle, a lug on said latter guide adaptedy to be engaged by said projection upon said spindle moving in one direction-and said latter guide being in operative', position, a

lpower accumulator attached to said llatterguide and adapted to beloaded by said spindle moving it in the engaging direction and vto swing said latter guidebaclr'wvhile,said

spindle moves in opposite direction, a sleeve y boltv adapted to releasel said nose-When said fixed on said hub, an initiallytensioned coiled spring adapted to rotate said sleeve relative-ly to said hub, a longitudinal groove in said sleeve, a Xed bolt engagingsaid groove when said latter guide is in inoperative posit-ion and to release it upon lsaid latter guide being shifted into operative position, means ,forV` latter guide being in operative position, a pavvl and ratchet gear arranged between jsaid limiting the rotation Aof said sleeve upon Ysaid latter guide and said sleeve and adapted to4 fcause the latter to stepwise re-tensionjsaid l2. In a pirn wind-.ine machine an axially reciprocating pirn spindle, a stationary main for reciprocating swingmotion'and forshifting motion on .said journal, aV hubon said pressed by said hub, .upon said latter guide.l

'being :shifted into operative position' vand toshift the latter into inoperative position Wlien'relaXing, saidlauzriliaryr guide being adapted toassuiiie the guiding control of sait yarn iii'the' voperative position, a projection on said spindle, a lug on said latter guide adapted to be engaged ,by said "projectiony upon said. spindle inoving'in one direction and said latter guide being inoperative position, a. povveraccumulator attached to :said latter guide and `adapted to be loaded by said spindle moving v'it in 'the Aengaging direction and to swing said latter guide back While 'soi said spindle vmoves in'opposite direction, av l sleeve fixed on said hub,aninitially tensionedl f coiled Vspring `adapted tof rotate said sleeve" relatively to said hub, a longitudinal groove 1 in saidsleeve, a. fixed boltengaging said groove when said latter guide is in inoperai tive position, and ltorelease itfupon said latter 1 *guide*beingr shifted into yoperative' position, alug. onr saidsleeve, a projection ona fixed .o machine part' adapted to stop saidlug after I a certainrotationv Of-sadfs'leeVe, a 'paivl and'k ratchet gear arranged between-said latter Y guidev and Asaid sleeveand adapted to cause fthe latter to ,stepwise ifo-tension said cjoiledfy f. spring during the svviiiginotion of said latter ioog guide`,a check paivl andfiatchet geararranged i betiveeirsaid sleeve and a iiXedjpai-t ofthe n rk saidbolt, la nose on saidlatter guide adapted tov abut on said bolt upon the forinervbeing machine, saidA latter paWl 'being formed 'by in inoperativepositio'n, anda recess in saidv lattervr guide is shifted into operative position. 113.1111 .a pirn Windingmach-ine an a'Xifally ing motion on said journal, a liub on said latter .guide freelyrotatable and slii'ftable` on Vsaid journal, a spring adapted to bec'oinpressed by said'hub upon said latter guide being shifted intooperative position-and to i shift vthe latter finto inoperative position Whenfrcaxing said auxiliary guide being adapted to assume the guiding control of said yarns inthe latter position, a ,projection on said spindle, alug on said' latter guide adaptspindle moving in one ydirection and said latter guide being in operative position, a power accumulator attachedto said latter guideiand e Aed to'v be engaged by said projection upon vsaid y ...mmm

adapted to be loade'd by said spindle movingA it in the engaging direction and to swing said latter guide bach while said spindle moves in opposite direction, a sleeve liXed on said hub, an initially tensione'd coiled spring adapted to rotate said sleeve relatively to said hub, a longitudinal groove in said sleeve, a fixed bolt engaging said groove when said latter guide is in inoperative position and to release it upon saidlatter guide being shifted into operative position, a lug on said sleeve, a projection on a lined machine part adapted to stop said lug after a certain rotation of said sleeve, a pawl and ratchet gear arranged between said latter guide and said sleeve, and adapted to cause the latter to stepwise retension said coiled spring during the swing motion of said latter guide, a check pawl and ratchet gear arranged between said sleeve and a lined part of the machine, said latter pawl being formed by said bolt, a nose on said lat-` ter guide adapted to abut on saidl bolt upon the former being in inoperative position, and

Y a recess in said bolt adapte'd'to release said nose when said latter guide is shifted into operative position, said bolt being rotatably mounted on said journal, and means for tixing said bolt on the latter in di terent angular positions relatively to said sleeve.

llllln a pirn winding machine an axially reciprocatiiio` pirn spindle, a stationary main yarn guide normally adapted to guide a yarn thread, a journal lifted' on a stationary machine part, an auxiliary yarn guide mounted for reciprocating swing motion and for shifting motion on said journal, a hub on said latter guide freely rotatable and shiftable on said journal, a spring adapted to be conipressed by said hub upon said latter guide being shifted into operative position and to shift the latter into inoperative position when relaxing said auxiliary guide being adapted to assume the guiding control of said yarn in the operative position, a projection on said spindle, a lug on said latter guide adapted to be engaged `by said projection upon said spindle moving in one direction and said lat-- ter guide being in operative position, a power accumulator attached to said latter guide and adapted to be loaded by said spindle moving it in the engaging direction and to swing said latter guide back while said spindle nieves in opposite direction, a sleeve fixed on said hub, an initially tensioned coiled spring adapted to rotate said sleeve relatively to said hub, a longitudinal groove in said sleeve, a fixed bolt engaging said groove when said latter guide is in inoperative position and to release it upon said latter guide being shifted into operative position, a lug on said sleeve, a projection on a fixed machine-part adapt-- ed to stop said lug after a certain rotation of said sleeve, a pawl and ratchet gear ar- Y ybolt eccentrically lodged in said stationary machine part, said journal being lodged in said last-nained hub, and a clamping screw adapted to fix the latter in dilierent angular positions relatively tosaid machine part.

ln testimony whereof I aliiX my signature.

' HANS SCHVEITER. 

